<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      @keydown.enter="addNewTodo"
    />
  </div>
</template>

<script lang="ts">
import { defineComponent } from "vue";

export default defineComponent({
  name: "Header",
});
</script>

<script setup lang="ts">
/**
 * 接受自定义事件
 */
const emits = defineEmits<{
  (event: "addTodo", value: string): void;
}>();
/**
 * 添加事件
 * @param e 事件
 */
const addNewTodo = (e: Event) => {
  const todo = (e.target as HTMLInputElement).value.trim();
  if (!todo) return;
  emits("addTodo", todo);
  (e.target as HTMLInputElement).value = "";
};
</script>

<style  scoped >
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>